Alert archive / Tennessee / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 132, NWS Morristown, TN

July 14, 2015Scott County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Jul 14, 2015, 12:20 PM EDT for Scott County, Tennessee. It was in force for 55 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 14, 2015, 12:20 PM EDT (16:20 UTC)
Expired: Jul 14, 2015, 1:15 PM EDT
In force: 55 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon
Tornado: Possible
Hail: 1.75 in
Wind: 70.0 mph

County Scott County, TN

The radar

The Knoxville radar (KMRX), 103 km from the middle of the area, began a volume at 16:24 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 4.3 hours before the alert went out and 191 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1670 J/kg
Mixed-layer CIN: -104 J/kg
Mixed-layer LCL: 991 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 105 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 5.8

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Morristown, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 14, 9:36 AM EDT, 2 hours 44 minutes earlier.

Area forecast discussion, Jul 14, 9:36 AM EDT, 2 hours 44 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MORRISTOWN TN
936 AM EDT TUE JUL 14 2015

.DISCUSSION...SORT OF LIKE THE WAY THE HRRRR HANDLES THE AFTERNOON
CONVECTIVE SHOW. THIS MODEL SEEMS TO UNDERSTAND THAT MORNING
CONVECTION THAT IS CURRENTLY RAKING OVER SOUTHWEST VIRGINIA AND
NORTHEAST TENNESSEE COULD SUFFICIENTLY STABILIZE THE ATMOSPHERE IN
THIS REGION TO KEEP ANY STORMS FROM BECOMING SEVERE. HOWEVER
FARTHER WEST AND SOUTH WHERE DEWPOINT TEMPERATURES ARE IN THE LOWER
70S...THE ACTION COULD BE LIVELIER. ALSO...THERE DOESN'T APPEAR TO
BE QUITE AS MUCH CLOUD MASS INHIBITING INSOLATION ACROSS WESTERN
AND CENTRAL SECTIONS OF KENTUCKY CLOSER TO WHERE THE NEW DAY'S
STRONG TO SEVERE CONVECTION MAY BUBBLE UP AS THE LAKES SHORT WAVE
DRIVES SOUTHEAST TOWARD THE OHIO VALLEY. AFTER CHECKING OUT POPS IN
THE GRIDS IT LOOKS LIKE THEY ARE SET UP WELL FOR WATCHING THE
MORNING ACTION FADE AWAY TO THE SOUTHEAST WHILE AWAITING EXPECTED
AFTERNOON THROUGH EVENING CONVECTION BUILD BACK ACROSS THE SOUTHERN
APPALACHIAN REGION. CAPES AROUND 3000-4500 J/KG ALONG WITH 35-40
KNOTS OF SHEAR SHOULD LEAD TO SEVERE THUNDERSTORM DEVELOPMENT WITH
THE MAIN THREAT BEING STRAIGHT LINE WIND WITH A MINOR THREAT FOR AN
ISOLATED TORNADO.

&&

.MRX WATCHES/WARNINGS/ADVISORIES...
NC...NONE.
TN...NONE.
VA...NONE.

&&

Hazardous weather outlook, Jul 14, 3:51 AM EDT, 8 hours 29 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MORRISTOWN TN
351 AM EDT TUE JUL 14 2015

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-
005-006-008-150800-
CHEROKEE-CLAY-SCOTT TN-CAMPBELL-CLAIBORNE-HANCOCK-HAWKINS-
SULLIVAN-JOHNSON-MORGAN-ANDERSON-UNION-GRAINGER-HAMBLEN-
NORTHWEST COCKE-COCKE SMOKY MOUNTAINS-NORTHWEST GREENE-
SOUTHEAST GREENE-WASHINGTON TN-UNICOI-NORTHWEST CARTER-
SOUTHEAST CARTER-ROANE-LOUDON-KNOX-JEFFERSON-NW BLOUNT-
BLOUNT SMOKY MOUNTAINS-NORTH SEVIER-SEVIER SMOKY MOUNTAINS-
SEQUATCHIE-BLEDSOE-RHEA-MEIGS-MCMINN-NORTHWEST MONROE-
SOUTHEAST MONROE-MARION-HAMILTON-BRADLEY-WEST POLK-EAST POLK-LEE-
WISE-SCOTT-RUSSELL-WASHINGTON-
351 AM EDT TUE JUL 14 2015 /251 AM CDT TUE JUL 14 2015/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST NORTH
CAROLINA...EAST TENNESSEE AND SOUTHWEST VIRGINIA.

.DAY ONE...TODAY AND TONIGHT...

A WEAKENING LINE OF STRONG TO SEVERE THUNDERSTORMS WILL MOVE
ACROSS MUCH OF NORTHEAST TENNESSEE AND SOUTHWEST VIRGINIA EARLY
THIS MORNING. A LOCALIZED DAMAGING WIND GUST AND HEAVY RAINFALL IS
POSSIBLE WITH THIS ACTIVITY.

A HEIGHTENED RISK FOR WIDESPREAD DAMAGING STRAIGHT-LINE WINDS WILL
EXIST WITH ANOTHER COMPLEX OF SEVERE THUNDERSTORMS THAT MAY
DEVELOP LATE THIS AFTERNOON AND EVENING ALONG AND AHEAD OF A
SOUTHWARD MOVING COLD FRONT. IN ADDITION TO THE DAMAGING WIND
THREAT...VERY LARGE HAIL AND LOCALIZED FLASH FLOODING FROM HEAVY
RAINFALL WILL ALSO BE POSSIBLE. ADDITIONALLY...THE POTENTIAL FOR A
FEW TORNADOES ALSO EXISTS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING.

In the hours before

Special weather statement, Jul 14, 9:52 AM EDT, 2 hours 28 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
952 AM EDT TUE JUL 14 2015

TNZ068-071-072-074-141430-
SEVIER SMOKY MOUNTAINS TN-BLOUNT SMOKY MOUNTAINS TN-NW BLOUNT TN-
LOUDON TN-
952 AM EDT TUE JUL 14 2015

...SPECIAL WEATHER STATEMENT...

AT 951 AM EDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR LENOIR CITY TO 7 MILES
SOUTHEAST OF MARYVILLE TO 9 MILES SOUTHWEST OF GATLINBURG...AND
MOVING SOUTHEAST AT 20 MPH.

HALF INCH HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH
THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
LOUDON...GREENBACK...FRIENDSVILLE...TOWNSEND...ELKMONT...TALASSEE...
CADES COVE...HAPPY VALLEY AND CLOVER HILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3549 8394 3550 8398 3549 8398 3551 8401
      3556 8400 3554 8409 3559 8411 3559 8417
      3577 8434 3569 8396 3571 8368 3569 8365
      3570 8360 3559 8347 3556 8350 3558 8361
      3556 8377 3552 8383 3552 8388 3547 8394
TIME...MOT...LOC 1351Z 322DEG 16KT 3575 8420 3565 8391 3566 8365

TD

Special weather statement, Jul 14, 11:04 AM EDT, 1 hour 16 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1104 AM EDT TUE JUL 14 2015

TNZ014>016-VAZ001-141530-
HAWKINS-CLAIBORNE-HANCOCK-LEE-
1104 AM EDT TUE JUL 14 2015

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN
CLAIBORNE...NORTHWESTERN HAWKINS...HANCOCK AND SOUTHWESTERN LEE
COUNTIES...

AT 1103 AM EDT...A LINE OF STRONG THUNDERSTORMS WAS ALONG A LINE
EXTENDING FROM 16 MILES NORTH OF HARROGATE-SHAWANEE TO NEAR
SNEEDVILLE...AND MOVING SOUTHEAST AT 35 MPH.

WINDS IN EXCESS OF 40 MPH AND HALF INCH HAIL ARE POSSIBLE WITH THESE
STORMS.

LOCATIONS IMPACTED INCLUDE...
SNEEDVILLE...JONESVILLE...TAZEWELL...HARROGATE-SHAWANEE...KYLES
FORD...CUMBERLAND GAP...EVANSTON...HOWARD QUARTER...EWING...
TREADWAY...KLONDIKE...ROSE HILL AND MOORESBURG.

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 3661 8298 3659 8298 3659 8295 3653 8286
      3630 8326 3632 8328 3635 8326 3638 8329
      3640 8328 3639 8331 3642 8335 3642 8343
      3639 8345 3659 8369 3662 8365 3667 8352
      3667 8342 3670 8334 3674 8316
TIME...MOT...LOC 1503Z 303DEG 44KT 3681 8376 3649 8326

MJB

Special weather statement, Jul 14, 11:18 AM EDT, 1 hour 2 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1118 AM EDT TUE JUL 14 2015

NCZ060-TNZ085>087-101-102-141545-
CHEROKEE-SOUTHEAST MONROE-NORTHWEST MONROE-WEST POLK-EAST
POLK-MCMINN-
1118 AM EDT TUE JUL 14 2015

...A STRONG THUNDERSTORM WILL AFFECT WESTERN CHEROKEE...NORTHEASTERN
POLK...SOUTHEASTERN MCMINN AND SOUTHERN MONROE COUNTIES...

AT 1117 AM EDT...A STRONG THUNDERSTORM WAS 12 MILES EAST OF ETOWAH...
OR 16 MILES NORTH OF DUCKTOWN...MOVING SOUTH AT 50 MPH.

WINDS IN EXCESS OF 40 MPH AND HALF INCH HAIL ARE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
MURPHY...TELLICO PLAINS...MOUNT VERNON...HIAWASSE DAM...BULLET
CREEK...COKER CREEK...UNAKA AND VIOLET.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 3518 8450 3548 8446 3530 8402 3527 8401
      3524 8401 3523 8398 3504 8403
TIME...MOT...LOC 1517Z 347DEG 43KT 3526 8432

MJB

Local storm report, Jul 14, 11:38 AM EDT, 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1138 AM EDT TUE JUL 14 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1105 AM     TSTM WND DMG     MADISONVILLE            35.52N 84.36W
07/14/2015                   MONROE             TN   911 CALL CENTER

            COUPLE TREES DOWN.

&&

Special weather statement, Jul 14, 11:59 AM EDT, 21 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1159 AM EDT TUE JUL 14 2015

TNZ015-016-VAZ001-141645-
HAWKINS-HANCOCK-LEE-
1159 AM EDT TUE JUL 14 2015

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN HAWKINS...HANCOCK
AND SOUTHWESTERN LEE COUNTIES...

AT 1159 AM EDT...A STRONG THUNDERSTORM WAS NEAR SNEEDVILLE...MOVING
SOUTHEAST AT 25 MPH.

WINDS IN EXCESS OF 40 MPH AND DIME SIZE HAIL ARE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
SNEEDVILLE...TREADWAY...KLONDIKE...KYLES FORD...EVANSTON AND EWING.

LAT...LON 3654 8290 3635 8315 3651 8339 3655 8341
      3660 8347 3660 8351 3663 8356 3667 8349
      3666 8348 3667 8342 3669 8336
TIME...MOT...LOC 1559Z 315DEG 23KT 3654 8330

MJB

Local storm report, Jul 14, 12:05 PM EDT, 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1205 PM EDT TUE JUL 14 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1151 AM     HAIL             ANDREWS                 35.20N 83.82W
07/14/2015  E0.25 INCH       CHEROKEE           NC   TRAINED SPOTTER

&&

The office that day

Everything else NWS Morristown, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 14, 5:16 AM EDT	Special Weather Statement	MRX	Hancock	44 min
Jul 14, 5:59 AM EDT	Special Weather Statement	MRX	Claiborne, Grainger, Greene, Hamblen, Hancock, Hawkins and 1 more	46 min
Jul 14, 6:28 AM EDT	Areal Flood Advisory	MRX	Carter, Johnson, Sullivan, Unicoi, Washington	3 hr
Jul 14, 6:32 AM EDT	Areal Flood Advisory	MRX	Claiborne, Cocke, Grainger, Greene, Hamblen, Hancock and 2 more	3 hr
Jul 14, 6:44 AM EDT	Special Weather Statement	MRX	Cocke, Greene, Jefferson	46 min
Jul 14, 7:31 AM EDT	Severe Thunderstorm Warning	MRX	Claiborne, Grainger, Hamblen, Hancock, Hawkins	44 min
Jul 14, 7:33 AM EDT	Special Weather Statement	MRX	Anderson, Campbell, Grainger, Jefferson, Knox, Scott and 1 more	42 min
Jul 14, 8:08 AM EDT	Areal Flood Advisory	MRX	Anderson, Campbell, Claiborne, Scott, Union	112 min
Jul 14, 8:13 AM EDT	Special Weather Statement	MRX	Anderson, Cocke, Grainger, Greene, Hamblen, Hawkins and 6 more	47 min
Jul 14, 8:42 AM EDT	Special Weather Statement	MRX	Campbell, Morgan, Scott	48 min
Jul 14, 8:55 AM EDT	Special Weather Statement	MRX	Blount, Sevier	50 min
Jul 14, 9:02 AM EDT	Areal Flood Advisory	MRX	Anderson, Blount, Knox, Sevier	118 min
Jul 14, 9:30 AM EDT	Special Weather Statement	MRX	Anderson, Jefferson, Knox, Morgan, Roane, Union	45 min
Jul 14, 9:52 AM EDT	Special Weather Statement	MRX	Blount	38 min
Jul 14, 10:01 AM EDT	Severe Thunderstorm Warning	MRX	Blount, Sevier	20 min
Jul 14, 10:02 AM EDT	Flash Flood Warning	MRX	Blount, Knox, Sevier	118 min
Jul 14, 10:17 AM EDT	Severe Thunderstorm Warning	MRX	Morgan, Roane	43 min
Jul 14, 10:23 AM EDT	Areal Flood Advisory	MRX	Blount, Loudon, Monroe, Roane	112 min
Jul 14, 10:57 AM EDT	Severe Thunderstorm Warning	MRX	Loudon, McMinn, Monroe, Roane	48 min
Jul 14, 11:04 AM EDT	Special Weather Statement	MRX	Hancock	26 min
Jul 14, 11:50 AM EDT	Areal Flood Advisory	MRX	Hancock	115 min
Jul 14, 11:59 AM EDT	Special Weather Statement	MRX	Hancock	46 min
Jul 14, 12:31 PM EDT	Special Weather Statement	MRX	Polk	44 min
Jul 14, 12:34 PM EDT	Flash Flood Warning	MRX	Claiborne, Greene, Hancock, Hawkins	4 hr
Jul 14, 12:48 PM EDT	Special Weather Statement	MRX	Hancock, Hawkins	57 min
Jul 14, 1:17 PM EDT	Special Weather Statement	MRX	Campbell	43 min
Jul 14, 1:40 PM EDT	Special Weather Statement	MRX	Hawkins	35 min
Jul 14, 1:44 PM EDT	Severe Thunderstorm Warning	MRX	Greene, Hawkins	46 min
Jul 14, 1:52 PM EDT	Severe Thunderstorm Warning	MRX	Campbell, Union	53 min
Jul 14, 1:58 PM EDT	Severe Thunderstorm Warning	MRX	Scott	47 min
Jul 14, 2:06 PM EDT	Severe Thunderstorm Warning	MRX	Greene, Unicoi, Washington	22 min
Jul 14, 2:39 PM EDT	Severe Thunderstorm Warning	MRX	Grainger, Jefferson	36 min
Jul 14, 2:44 PM EDT	Areal Flood Advisory	MRX	Anderson, Campbell, Grainger, Knox, Morgan, Scott and 1 more	3 hr
Jul 14, 2:51 PM EDT	Severe Thunderstorm Warning	MRX	Morgan	31 min
Jul 14, 3:05 PM EDT	Severe Thunderstorm Warning	MRX	Anderson, Campbell, Knox, Union	55 min
Jul 14, 3:08 PM EDT	Severe Thunderstorm Warning	MRX	Cocke, Jefferson	67 min
Jul 14, 3:12 PM EDT	Severe Thunderstorm Warning	MRX	Morgan, Roane	48 min
Jul 14, 3:15 PM EDT	Flash Flood Watch	MRX	Anderson, Blount, Campbell, Carter, Claiborne, Cocke and 18 more	13 hr
Jul 14, 3:15 PM EDT	Tornado Warning	MRX	Morgan	15 min
Jul 14, 3:35 PM EDT	Severe Thunderstorm Warning	MRX	Morgan	40 min
Jul 14, 3:37 PM EDT	Areal Flood Advisory	MRX	Knox, Loudon, Meigs, Morgan, Rhea, Roane	3 hr
Jul 14, 3:54 PM EDT	Severe Thunderstorm Warning	MRX	Loudon, Morgan, Roane	66 min
Jul 14, 4:29 PM EDT	Severe Thunderstorm Warning	MRX	Bledsoe, McMinn, Meigs, Rhea	61 min
Jul 14, 4:34 PM EDT	Severe Thunderstorm Warning	MRX	Blount, Loudon, McMinn, Monroe	56 min
Jul 14, 4:36 PM EDT	Severe Thunderstorm Warning	MRX	Blount, Loudon, Sevier	54 min
Jul 14, 4:58 PM EDT	Tornado Warning	MRX	McMinn, Monroe	47 min
Jul 14, 5:13 PM EDT	Areal Flood Advisory	MRX	Bledsoe, Hamilton, McMinn, Meigs, Monroe, Rhea	3 hr
Jul 14, 5:23 PM EDT	Severe Thunderstorm Warning	MRX	Bradley, McMinn, Meigs, Monroe, Polk, Rhea	67 min
Jul 14, 5:27 PM EDT	Severe Thunderstorm Warning	MRX	Bledsoe, Bradley, Hamilton, Marion, Meigs, Rhea and 1 more	63 min
Jul 14, 5:29 PM EDT	Severe Thunderstorm Warning	MRX	Monroe	46 min
Jul 14, 5:48 PM EDT	Areal Flood Advisory	MRX	Bradley, Hamilton, Marion, Polk, Sequatchie	3 hr
Jul 14, 6:23 PM EDT	Severe Thunderstorm Warning	MRX	Bradley, Polk	37 min
Jul 14, 6:27 PM EDT	Severe Thunderstorm Warning	MRX	Bradley, Hamilton, Marion, Sequatchie	48 min
Jul 14, 5:46 AM EDT	Areal Flood Advisory	MRX	Lee, Scott, Wise, City of Norton	3 hr
Jul 14, 5:48 AM EDT	Areal Flood Advisory	MRX	Russell, Washington, City of Bristol	3 hr
Jul 14, 6:02 AM EDT	Special Weather Statement	MRX	Scott, Wise, City of Norton	43 min
Jul 14, 7:53 PM EDT	Special Weather Statement	MRX	Russell, Wise, City of Norton	52 min
Jul 14, 11:18 AM EDT	Special Weather Statement	MRX	Cherokee	27 min
Jul 14, 11:56 AM EDT	Severe Thunderstorm Warning	MRX	Cherokee, Clay	49 min
Jul 14, 6:15 PM EDT	Severe Thunderstorm Warning	MRX	Cherokee, Clay	30 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2015 Every severe thunderstorm warning in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.